Mayckol Guaipe
Mariners add three to 40-man roster
Mayckol Guaipe, RP, SEA
11/20/2014
News: The Mariners have added three players to the 40-man roster.

Mayckol Guaipe , John Hicks and Ketel Marte all had their contracts purchased by the team on Thursday. All three players will not be eligible to be selected in the Rule 5 draft. 

Analysis: 

Edgar Olmos
Mariners claim pitcher Edgar Olmos off waivers from Marlins
Edgar Olmos, RP, SEA
11/20/2014
News: The Mariners claimed pitcher Edgar Olmos off waivers from the Marlins on Thursday. Olmos, 24, went 3-3 with three saves and a 4.06 ERA in 51 appearances between Double-A and Triple-A last season.
Analysis: 

Alexi Ogando
Report: Rangers pitcher Alexi Ogando will not pitch in winter ball
Alexi Ogando, RP, TEX
11/20/2014
News: Rangers pitcher Alexi Ogando has decided not to pitch in winter ball, according to the Fort Worth Star-Telegram. Ogando missed the remainder of the 2014 season after being sidelined in early June due to an elbow injury.
Analysis: 

Sergio Santos
White Sox interested in reunion with Sergio Santos
Sergio Santos, RP, TOR
11/19/2014
News: The White Sox have shown interest in bringing back reliever Sergio Santos , according to SB Nation.

Santos was a key part of the organization from 2010-2011, but his career didn't go as well after being traded to Toronto. Santos spent the past three seasons dealing with injuries. In 2014, he posted an 8.57 ERA over 21 innings. The Blue Jays declined his option, making him a free-agent. 

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Zach Duke
White Sox sign reliever Zach Duke to three-year, $15 million deal
Zach Duke, RP, CHW
11/18/2014
News: The White Sox announced Tuesday they signed reliever Zach Duke to a three-year, $15 million contract. 

The former starting pitcher went 5-1 with a 2.45 ERA, 12 holds and 74 strikeouts in a career-high 74 appearances (58 2/3 innings) with the Brewers in 2014.

"Very early on, we identified Zach as one of the best left-handed free agents available this offseason, so we are very pleased he agreed to join the White Sox," White Sox senior vice president/general manager Rick Hahn said. "He addresses an important need in our bullpen by giving Robin Ventura a veteran left-handed option late in games."

Analysis: 

Francisco Rondon
Braves sign Francisco Rondon
Francisco Rondon, RP, NYY
11/14/2014
News: The Braves have signed pitcher Francisco Rondon to a minor-league contract.

The 26-year-old Rondon posted a 3.55 ERA over two levels in 2014 with the Yankees. While Rondon was used as a starter early in his career, he's mostly transitioned to a reliever over the past couple seasons. 

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Joel Hanrahan
Report: Tigers keeping right-hander Joel Hanrahan around
Joel Hanrahan, RP, DET
11/14/2014
News: In their seemingly never-ending search for a possible effective closer, the Tigers have re-signed right-hander Joel Hanrahan, who has lost nearly two seasons to Tommy John surgery. The one-year deal with a $1 million base includes $2.5 million in incentives, per USA Today.

Hanrahan was among the premier closers in the game with Pittsburgh in 2011 and 2012. He was 76 of 84 in save opportunities during that those two seasons combined.

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Cody Allen
Report: Indians to seek multi-year deal with closer Allen
Cody Allen, RP, CLE
11/14/2014
News: The Indians will likely seek to sign closer Cody Allen to a multi-year deal this offseason, the Cleveland Plain Dealer is speculating. Talks betwen the two sides stalled during the regular season.

Allen thrived after taking over the role. He was 24 for 28 in save opportunities and recorded an ERA of 2.07 with 91 strikeouts in 69 2/3 innings.

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Miles Mikolas
Rangers' Mikolas, Poreda agree to continue careers in Japan
Miles Mikolas, RP, TEX
11/12/2014
News: Rangers pitchers Miles Mikolas and Aaron Poreda have agreed to have their contracts purchased by the Yomiuri Giants (Japan), according to the Fort Worth Star-Telegram. However, the transactions aren't expected to be finished this week.
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Bruce Rondon
Tigers GM views Bruce Rondon as wild card for bullpen in 2015
Bruce Rondon, RP, DET
11/12/2014
News: Tigers general manager Dave Dombrowski said he views reliever Bruce Rondon as a "wild card" in 2015, according to the New York Post.

Rondon was slated to be a setup man in 2014 before he missed the season due to Tommy John surgery. Dombrowski said Rondon was given a clean bill of health last week, and the expectation is he will be ready for spring training

Dombrowski envisions veteran Joe Nathan handling the closer's role in 2015. However, he added if Nathan doesn't return to form after a down year in 2014, then it's possible Joakim Soria could end up in the closer's role.

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